Self-seeding conversion of polycrystalline silicon sheets to mac

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

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156DIG64, 156DIG88, 156DIG65, 156DIG80, 422250, B01J 1708, B01J 1720, C01B 3302

Patent

active

041960416

ABSTRACT:
A polycrystalline semiconductor sheet may be converted to a monocrystalline or macrocrystalline semiconductor sheet through use of a geometric restriction in the sheet. The process requires formation of a region of the sheet having a small width compared to the width of the remainder of the sheet. A molten zone is formed in the small width region of the sheet. At least a portion of the molten zone is allowed to solidify into a single crystal or crystals of large size of the semiconductor material coextensive with the small width of the region at the portion of the molten zone so solidified. The molten zone is then moved from the small width region of the sheet into the remainder of the sheet. The sheet is allowed to solidify successively as the molten zone passes along it. As a result, the macrocrystal formed in the narrow width region of the sheet propagates into the remainder of the sheet through which the molten zone passes. This process allows formation of high modified semiconductor material without requiring use of a seed crystal.

REFERENCES:
patent: 2789039 (1957-04-01), Jensen
patent: 2992903 (1961-07-01), Imber
patent: 3031275 (1962-04-01), Shockley
patent: 3287107 (1966-11-01), Eaton
patent: 3293002 (1966-12-01), Spielmann
patent: 3348962 (1967-10-01), Grossman
patent: 3600237 (1971-08-01), Davis
patent: 3977934 (1976-08-01), Lesk
patent: 3996094 (1976-12-01), Lesk
Pfann et al., Improvement in Floating Zone Technique, J of Appl. Phys., vol. 30, 1959, pp. 454-455.
Lawson et al., Preparation of Single Crystals, London, 1958, pp. 11, 14, 15, 26, 27, 28.

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